Stance and performance are not mutually exclusive. The whole stance movement came from low and wide time attack cars.
To me, stance is a very broad term which is an aesthetic where the car is low to the ground and low clearance between tyre and body. It doesn't necessarily mean camber, stretched tyres, dish, so low you're scraping the ground, or being able to hold a card between the fender and tyre. That would be the hellaflush/fitment movement which is a subset of the stance movement. I can understand why people may dislike hellaflush, as it takes stance to a point where form is more important than function.
But for many stanced cars, the form and function work together. I would regard v8 supercars and gt3 cars as being stanced. So I think if anyone is to write off stance all together they have to be a real traditionalist or not understand wha stance is.